Good probability that 75167 would fit most applications. Look at page 3 of SI 1435. The show the tube, a straight, and what looks like to me a 45*, maybe a 90* adjustable adapter fitting. In their pic, the angled fitting is used to fit that tube, assuming its a 75167. Put in the straight nipple, and that tube wont work. Re-orient the installed angle of the adjustable fitting and the tube wont work.
Its great for a Lycoming installed governor for whatever prop. My point was for those custom experimental engines out there that at some point my have changed the governor and housing, the 4 Lycoming part numbers may not orient correctly.
Seems that they are all very similar to a point near the right lower Dynofocal mounting boss, then they change to route to the governor. You can still use a stainless rigid tube, but you may have to custom may one to fit YOUR particular application. I ones I made were for IO360, Superior sumps, and apparently 2 different governors or housings, and required 2 different angled tube ends to meet the adapters. Wasnt a problem to make, just wasnt an off the shelf item.
Tom